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Can anyone help me out here with this DC motor, especially the encoder part? I tried searching around for its datasheet but its as short as 1 page and the only spec I get are:

Encoder: 1 pulse/revolution

It has 2 connection on the bottom, and I guess they are for driving the motor, but they say nothing about the 3 connections wires below.

enter image description here

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    $\begingroup$ What exactly is the question here? $\endgroup$ – Damjan Dakic Mar 17 '14 at 10:54
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Besides referring to the previously-mentioned 82860502 pdf file, see pages 30 and 31 of Steven Engineering's 44MICRO-MOTORS.pdf file, where the following diagram appears and shows the usage of the brown, yellow, and blue wires.

encoder wiring diagram

Attach a V+ voltage (for example, 5VDC) to the brown wire and connect the blue wire to ground. As the motor rotates, the yellow wire will alternately be pulled up to V+ through a 10K resistor, and to ground via an NPN transistor.

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Yes, Crouzet's 82860502 documentation doesn't seem to be very helpful.

According to this post on their forum, the wiring is as follows:

  • Brown wire: + VDC encoder supply
  • Yellow wire: encoder output signal
  • Blue wire: encoder ground
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